A friend reported that 16mm clear 3M perf tape has problems with new formula. Apparently, the white (sound) tape is ok, but the clear is not holding very well. 3M has little to say about the matter. International Cinema Supplies may have a better replacement, but I'm still awaiting word on this. My stock of old 3M should last me through the next few projects, but I'd like to know of a good replacement if one exists. In other news, EPA restrictions on perchloroethylene, aka PERC, aka "wet gate", has brought about a switch to several alternatives at labs and the results have not been good, some reports say there are residues left on the film.